Mindoo Vega Mind map and Kanban in one embedded app
Haven free beta Data sovereignty
A secure workspace for your team. A private database for your apps.
Haven is a calm, collaborative workspace where your team works with notes, files, apps, and data - encrypted by default and installable on any device. It runs on MindooDB, an open-source, local-first sync database you can run on your own servers, in your own jurisdiction; the server only ever sees ciphertext. Real data sovereignty, without giving up real-time collaboration.
Why Haven
Five things that set Haven apart
Secure by default
End-to-end encrypted
Client-side keys, no plaintext on the server. Apps only see what you explicitly share. Fine-grained access control governs who can create, change or delete documents - enforced cryptographically, even offline.
Collaborative
Multi-user by design
Automerge-based merges, shared tenants, and a guided onboarding flow for bringing teams in.
Cross-platform
Installable everywhere
Runs as a PWA on iOS, Android, and desktop. Add multiple instances for work, personal, and demos.
Local-first
Works without network
Full local use with built-in backup and flexible push-only, pull-only, or bidirectional sync.
Extensible
Real app platform
Build apps with the MindooDB App SDK or have an AI generate them from the published context files.
In practice
From three orgs into one private workspace
When buyer, seller, and counsel work on the same confidential deal, each side keeps its own tenant. Haven brings the shared documents, Q&A, and closing tasks into one workspace - while the server only ever sees ciphertext, and every change becomes a signed node in a tamper-evident DAG.
New podcast episode
Zero-Trust Collaboration with MindooDB Haven
Two AI hosts · ~23 min · generated by NotebookLM
A relaxed deep-dive into how Haven turns MindooDB into a browser-based workspace: end-to-end encrypted data with keys that never leave your device, local replicas for fast offline work, CRDT-based merging with a tamper-evident change history, strictly separated multi-tenant workspaces, custom apps, and virtual views that combine data across contexts. An entertaining and accessible introduction to the platform.
One surface for daily work
Your workspace, your way
Pages, Chicklets, and groups let you arrange databases, applications, notes, web content, and media exactly the way your team thinks. Haven becomes the calm home screen for your encrypted data.
- Multiple workspace pages reorderable like tabs, plus an All page for a full overview.
- Draggable, resizable tiles for databases, apps, notes, web, media, and Mermaid diagrams.
- Search by database, tenant, tag, or server so nothing gets lost.
- Database browser with CRUD, revision compare, and drag-and-drop file attachments.
- Rich file preview for Office, images, audio, and video - MP4 even transmuxed on the fly.
See it in action
A real workspace, ready for everyday work
Haven is not a concept mockup. It is a working product that already brings together navigation, workspace organization, search, database access, and local-first workflows in the browser.
Click the workspace screenshot to inspect a much taller Haven page with notes, media, running apps, mind maps, Kanban boards, and Mermaid tiles in one real workspace.
Build on Haven
A real app platform, not just a launcher
Applications can run embedded in the Haven grid or in their own tab, access selected databases and views, and ship as either externally hosted web apps or Haven-hosted bundles served offline by the service worker.
- MindooDB App SDK with launch context, live events, documents, attachments, and Virtual Views.
- Capability-based security - Haven decides what every app can see and do.
- Online or offline - hosted bundles run even when the network is gone.
- Six demo apps - two first-party productivity apps you install from Haven (Mindoo Vega, for mind mapping and Kanban task tracking with full-text search, and Mindoo TodoManager, for team todos), two open-source collaborative editors that demonstrate the SDK's granular patch APIs (Mindoo TeamEdit, a collaborative markdown editor with character-level merging, and Mindoo TeamGrid, a collaborative spreadsheet with around 280 Excel-compatible formulas, charts, XLSX round-trip, and Virtual View Sheets that pull data from cross-tenant Haven views into ordinary worksheets), a beautiful responsive weather tile (Mindoo Weather) that adapts to the tile size and showcases the SDK's UX surface, and the open-source MindooDB App SDK example to fork as the starting point for your own app.
- Build with AI - feed /llms-full.txt and the example repo to a coding agent and let it generate apps.
TodoManager Light and dark mode team task boards
Mindoo TeamEdit Collaborative markdown editor with character-level merging
Private by design
Encrypted from the first keystroke
Haven inherits MindooDB's trust model. Data is encrypted on the client before it ever leaves the device, apps run in sandboxed iframes with granular permissions, and the DAG explorer makes collaboration auditable.
- End-to-end encryption with client-held keys and no plaintext on infrastructure.
- Sandboxed apps on separate origins; hosted bundles get an even stricter opaque-origin sandbox.
- DAG explorer turns Automerge merges into a navigable, auditable history.
- Flexible sync - push-only, pull-only, or bidirectional per setup, and per database you can choose whether to transfer documents plus attachments or documents only for leaner, faster syncs.
- Built-in backup of in-browser data, plus Virtual Views as a secure analytical layer.
Where your data lives
Local, demo, or your own server
Haven Community works in three topologies. Choose the one that matches your workflow - you can move between them without changing clients.
Local only
Fully in your browser
Create tenants and databases entirely offline. No server, no sync - ideal for personal use, drafts, and offline demos.
Mindoo demo server
Try team features
Push a local tenant to the hosted demo server and invite real collaborators. Demo data is wiped periodically - it is for evaluation, not production.
Self-hosted
Your own server
Point Haven at a MindooDB server you run. See README-server.md for setup.
Two ways to run Haven
Community or Enterprise
Haven Community
Free beta The Haven PWA at haven.mindoodb.com. Free to use today, full local use, optional demo server, and self-hosting against your own MindooDB server.
Haven Enterprise
Commercial Custom branding, managed UI and workspaces, in-house app store, workspace roaming, automatic backup, inline attachment editing, and more - from Mindoo GmbH.
Latest from the blog
MindooDB and Haven updates
Product updates and implementation notes from the MindooDB ecosystem.
25.05.2026
Mindoo TeamEdit update - collaborative Word/.docx editing on MindooDB Haven
Mindoo TeamEdit gains a Word/.docx editing mode alongside the existing collaborative Markdown editor. Two people can now open the same .docx file in two TeamEdit instances, type into the same paragraph, drop in images, reshape a table, accept tracked changes, leave threaded comments - and watch the merged result appear on both screens through MindooDB's Automerge sync, with only the actually changed spans on the wire. TeamEdit also handles multiple documents open at once - a Window menu lists every open Markdown brief and Word memo and lets you flip between them. Under the hood the document is mapped to Automerge's rich text format (formatting spans plus block markers) on top of the EigenPal docx-editor we picked after evaluating SyncFusion and Apryse - chosen for its Apache 2.0 license, OOXML round-trip fidelity, and ProseMirror foundation that lets us plug in MindooDB's collaborative storage cleanly.
21.05.2026
Mindoo TeamGrid update - virtual view sheets, 280 Excel formulas, charts and templates in MindooDB Haven
Four days after the initial release we are shipping a big round of updates to Mindoo TeamGrid, the open source collaborative spreadsheet for MindooDB Haven. The headline feature is Virtual View Sheets - pick any virtual view configured in Haven (including views that combine your private data with work data and with data from a partner company's tenant) and drop it into your workbook as a normal worksheet that Excel formulas, charts and XLSX export can read. Alongside it: a much larger formula engine with 280 Excel-compatible functions courtesy of fast-formula-parser, the four chart types Excel users actually use day to day (Column, Bar, Line, Pie), spreadsheet templates with File / New from template..., hidden rows and columns that survive an Excel round trip, automatic cell type detection from typed content, and a selection and keyboard model much closer to what people expect from Excel. And all of it still merges across two laptops, two devices, and four tabs the same way it did on day one.
19.05.2026
How MindooDB stores attachments - encrypted chunks, append-only history, and on-the-fly MP4 streaming in Haven
Attachments in MindooDB are not stored as one blob hanging off a document. Each file is a chain of small encrypted chunks (256 KB by default, encrypted with the document's own key), and each chunk points back at its predecessor. The document only references the *last* chunk - which turns growing a file into appending one chunk, makes earlier document revisions automatically see only the bytes that existed then, and reduces moving or duplicating a large attachment between documents to copying a tiny JSON entry. Chunks are deduplicated by a hash of their encrypted bytes, so the same file inside one MindooDB database occupies storage once and syncs once. On top of all that, Haven streams long media attachments straight from those decrypted chunks - and for older MP4 files that browsers refuse to stream, Haven rebuilds them on the fly into a streamable shape with a lazy-loaded mp4box.js pipeline.